Problems from 2021 ICPC North America Regional Programming Contests (March 5 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Archery Accuracy0.018711814223%7.2Harden
Average Character0.0054822195140%2.0Easyen
Black and White0.0759252423545%4.8Mediumen
Circle Bounce0.0020024211347%5.1Mediumen
Diagonals0.0018532357030%7.1Harden
Dorm Room Divide0.01476185626414%6.4Harden
Double Password0.0054543262558%1.6Easyen
Fail Them All!0.0089950211924%7.8Harden
Hopscotch 5000.1187871115722%7.1Harden
Overdraft0.0053134129041%2.0Easyen
Problem Set Construction0.019401094541%6.5Harden
Reversibly Cyclic Strings0.00578333843%3.1Mediumen
Rise and Fall0.0088117927824%4.6Mediumen
Scaling Recipe0.005205192645%1.9Easyen
Shortest Missing Subsequences0.0939444614332%6.0Harden
Square Bounce0.004701995829%6.1Harden
Tetris Generation0.0090129231024%6.0Harden
Tournament Seeding0.0122057424142%4.0Mediumen
Tree Hopping0.02893108232630%6.2Harden
Who Goes There?0.00119135842731%3.9Mediumen
XOR Island0.0027937112935%6.9Harden